Rose plant Keibian

ABSTRACT

Hybrid tea rose plant having distinctive color change in sunlight as the flower ages; a heavy, sweet fragrance; a vigorous, upright growth habit; dark green, disease resistant foliage, and the presence of glands on stipules and peduncles.

The present invention relates to a new and distinct variety of roseplant of the hybrid tea class which was originated by me by crossing anunnamed seedling with an unnamed seedling.

The primary objective of this breeding was to produce a new rose varietyhaving a flower that changed from yellow to red like its female parentand also had a good fragrance like that of its male parent. Theobjective was substantially achieved along with other desirableimprovements as evidenced by the following unique combination ofcharacteristics which are outstanding in the new variety and whichdistinguish it from its parents, as well as from all other varieties ofwhich I am aware:

1. An intense heavy, sweet fragrance;

2. An attractive intensification of flower color from a very lightyellow to a pink to red on the petal margins;

3. Deep glossy green, disease resistant foliage;

4. Presence of many glands on peduncles and stipules;

5. Upright, vigorous habit of growth.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., shows that the foregoing characteristics and distinctionscome true to form and are established and transmitted through succeedingpropagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with the RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent.--Unnamed seedling.

Pollen parent.--Unnamed seedling.

Classification:

Botanical.--Rose hybrida.

Commercial.--Hybrid tea.

FLOWER

Observations made from specimens grown in a garden in Somis, Calif. fromMar. to Aug., 1992.

Blooming Habit: Recurrent.

Bud

Size.--11/2 inches when the petals start to unfurl.

Form.--Long, pointed ovoid.

Color.--When sepals first divide, bud is a mixture of colors: Red Group43B on those areas most exposed to the sun, changes to Red Group 43D onareas less exposed and on areas least exposed is Yellow Orange Group18D. When half blown, the upper sides of the outer petals are Red Group43B on the edes shading to Red Group 43C then 43D finally shading toYellow Orange Group 18D; and the lower sides of the petals are Red Group43B to D on areas exposed to the sun; otherwise Yellow Orange Group 18D.

Sepals.--Color: Green Group 138C with a reddish cast. Surface texture:Covered in fine hairs. There are three lightly appendaged sepals. Thereare two unappendaged sepals with hairy edges.

Receptacle.--Color: Green Group 138B. Shape: Apple. Size: Medium(6/16×5/16 inches). Surface: Smooth.

Peduncle.--Length: Medium (31/2 to 4 inches). Surface: Glandular. Color:Medium green. Strength: Stiff, erect.

Bloom:

Size.--Large. Average open size is 5 inches.

Borne.--Singly.

Stems.--Medium (16 to 18 inches).

Form.--When first open: High centered. Permanence. Retains its form tothe end; outer petals curl back.

Petalage.--Number of petals under normal conditions: 30.

Color.--The upper side of the petals is Red Group 43B on petal edgesmost exposed to sun changing to Red Group 43C to D on less exposedsurfaces; least exposed are Yellow orange Group 18D. The reverse side ofthe petals is the same sequence but because so little of the petalunderside is exposed to the sun, most of the color is Yellow OrangeGroup 18D. The bases of the petals have a small (1/4×1/4 inches) yellowhalf moon Yellow Orange Group 14A at the point of attachment. The majorcolor on the upper side is Yellow Orange Group 18D.

Variegations.--None.

Discoloration.--The general tonality at the end of the first day: Littlechange. At the end of the third day, Gradual increase in color changefrom Yellow Orange Group 18D to more Red Group 43B through D.

Fragrance.--Strong.

Petals:

Texture.--Thick.

Shape.--Round.

Form.--Tips slightly recurved, edges slightly quilled.

Arrangement.--Imbricated, with few petaloids in the center.

Persistence.--Drop off cleanly.

Lastingness.--On the plant: Fair (4 to 5 days). As a cut flower: Fair (6days).

Reproductive parts:

Anthers.--Size: Large. Quantity: Many. Color: Yellow. Arrangement:Regular around styles.

Filaments.--Color: Yellow.

Pollen.--Color: Gold yellow.

Styles.--Color: White.

Stigmas.--Color: Greenish white.

Form: Bush.

Growth: Very vigorous, upright, branching.

Foliage:

Number of leaflets on normal mid-stem leaves.-- 5 or 7.

Size.--Large (6×5 inches).

Quantity.--Abundant.

Color.--New foliage: Reddish. Old foliage: Dark green, glossy.

Leaflets:

Shape.--Pointed oval.

Texture.--Upper side: Leathery, glossy.

Edge.--Serrated.

Serration.--Single, small.

Petiole rachis.--Color: Green.

Petiole underside.--Smooth with occasional prickles.

Stipules.--Medium, bearded and edged with glands.

Disease resistance.--Resistant to mildew and rust under normal growingconditions at Somis, Calif.

Wood:

New wood.--Color: Reddish. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form.--Medium, hooked downward.

Color when young.--Red.

Small prickles:

Quantity.--On main stalks: None. On laterals: None.

I claim:
 1. A new and distinct variety of rose plant of the hybrid teaclass, substantially as herein shown and described, characterizedparticularly as to novelty by the unique combination of its color changein sunlight as the flower ages; a heavy, sweet fragrance; a vigorous,upright growth habit; dark green, disease resistant foliage, and thepresence of glands on stipules and peduncles.